Hi there... so i've rooted my phone and I want it to be faster... I gather "flashing a new Rom" is the way. I have backed up all my user apps and system data but have a feeling the system data that is useful will be provided in the flashed rom? also I do not have 4g heck not even 3g so can I put the new ROM on my sd card via my pc? I seriously need a step by step in absolute dummy terms ha... sorry I am really trying to learn 
